US2951066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Three-component olefin polymerization catalyst containing an aluminum sesquihalide and a transition metal compound
Assignee: Eastman Kodak Co
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Filing: 1958-03-31
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Granted: 1960-08-30
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Expires: 1978-03-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry W Coover
- 👤 Jr Newton H Shearer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:31
CPC Classifications
C; C08; C08G; C08G79/00; C08G79/14; C08F; C08F10/00; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN THE POLYMERIZATION OF PROPYLENE TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE POLYMERIZATION IN LIQUID DISPERSION IN AN INERT LIQUID HYDROCARBON VEHICLE AND IN THE PRESENCE OF A CATALYTIC MIXTURE CONSISTING ESSENTIALLY OF A MOLAR RATIO OF ETHYL ALUMINUM SESQUICHLORIDE AND TITANIUM TRICHLORIDE OF 1:0.5 TO 1:2 AND A MOLAR RATIO OF ETHYL ALUMINUM SESQUICHLORIDE AND TRIPHENYL ARSINE OF 1:1 TO 1:0.25.
Claim 2
Dependent Claim
66 words
IN THE POLYMERIZATION OF PROPYLENE TO FORM SOLID CRYSTALLINE POLYMER, THE IMPROVEMENT WHICH COMPRISES EFFECTING THE POLYMERIZATION IN LIQUID DISPERSION IN AN INERT LIQUID HYDROCARBON VEHICLE AND IN THE PRESENCE OF A CATALYTIC MIXTURE CONSISTING ESSENTIALLY OF A MOLAR RATIO OF ETHYL ALUMINUM SESQUICHLORIDE AND TITANIUM TRICHLORIDE OF 1:0.5 TO 1:2 AND A MOLAR RATIO OF ETHYL ALUMINUM SESQUICHLORIDE AND TRIPHENYL ARSINE OF 1:1 TO 1:0.25.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-30 | 1964-02-29 | 1964-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-30 | 1968-02-29 | 1968-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-30 | 1972-02-29 | 1972-08-30 | $7700.00 | Window Closed / Lapsed |